1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 */ 19 20 package org.apache.myfaces.orchestra.lib; 21 22 import javax.servlet.FilterConfig; 23 import javax.servlet.ServletRequest; 24 import javax.servlet.http.HttpServletRequest; 25 26 /** 27 * Provides the ability to test the url of a servlet-request against a set of criteria to determine 28 * whether to "accept" the url or not. 29 * <p> 30 * This can be used for a number of purposes. One example is that servlet filters can use this to 31 * extend the very primitive "filter-mapping" facilities of the web.xml configuration file, giving 32 * the ability for the filter to be matched more precisely to the incoming url. 33 * <p> 34 * Initially the matching facilities are fairly primitive; just a single "excludePrefix" and 35 * "excludeSuffix" string can be defined. However this class can be extended later and classes which 36 * use this to filter their urls will transparently get the new features. 37 */ 38 public class _UrlMatcher 39 { 40 private final String excludePrefix; 41 private final String excludeSuffix; 42 43 public _UrlMatcher(FilterConfig config) 44 { 45 this.excludePrefix = config.getInitParameter("excludePrefix"); 46 this.excludeSuffix = config.getInitParameter("excludeSuffix"); 47 } 48 49 public boolean accept(ServletRequest req) 50 { 51 if ((excludePrefix == null) && (excludeSuffix == null)) 52 { 53 return true; 54 } 55 56 if (req instanceof HttpServletRequest == false) 57 { 58 return true; 59 } 60 61 HttpServletRequest hreq = (HttpServletRequest) req; 62 String pathInfo = hreq.getPathInfo(); 63 String servletPath = hreq.getServletPath(); 64 65 if (excludePrefix != null) 66 { 67 if (servletPath.startsWith(excludePrefix)) 68 { 69 return false; 70 } 71 } 72 73 if (excludeSuffix != null) 74 { 75 if ((pathInfo == null) && servletPath.endsWith(excludeSuffix)) 76 { 77 return false; 78 } 79 80 if ((pathInfo != null) && pathInfo.endsWith(excludeSuffix)) 81 { 82 return false; 83 } 84 } 85 86 return true; 87 } 88 }